Home / 673,315.20-1,009,972.80-421,372.80

Finding the Fourth Proportional to 673,315.20, 1,009,972.80 and 421,372.80

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Solution

The fourth proportional to 673,315.20, 1,009,972.80 and 421,372.80 is: 632,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,315.20 : 1,009,972.80 = 421,372.80 : x
  2. Step 2: Convert to fraction form
    673,315.20/1,009,972.80 = 421,372.80/x
  3. Step 3: Cross multiply
    673,315.20x = 1,009,972.80 × 421,372.80
  4. Step 4: Simplify right side
    673,315.20x = 425,575,066,659.84
  5. Step 5: Solve for x
    x = 425,575,066,659.84/673,315.20
  6. Step 6: Final answer
    x = 632,059.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.